Agoseris heterophylla (Nutt.) Greene
annual false dandelion (annual agoseris)
Asteraceae (Aster family)
Introduction to Vascular Plants
annual false dandelion (annual agoseris)
Asteraceae (Aster family)
Introduction to Vascular Plants
SUBTAXA PRESENT IN BC
Agoseris heterophylla var. heterophylla
Species Information
General:
Annual from a fibrous root; stems leafless, solitary to more often several, exuding milky juice when broken, 3-45 cm tall.
Leaves:
Mainly basal, oblanceolate to occasionally linear or lanceolate, entire to toothed or pinnatifid, 1-15 cm long, 0.1-1.5 cm wide.
Flowers:
Heads with strap-shaped flowers, solitary; involucres narrowly bell-shaped to rounded, 5-22 mm tall; involucral bracts in 1-2 series, lanceolate, abruptly sharp-pointed to attenuate, more or less long-hairy with septate, twisted hairlike growths, some of these purplish due to purplish cross-walls in the hairs; receptacles naked; ray flowers yellow, commonly pinkish upon drying.
Fruits:
Achenes several-ribbed or slightly winged, spindle-shaped, the body about 1-5 mm long, tapering to a slender beak about 2-3.5 times as long as the body; pappus of numerous hairlike bristles, 4-7 mm long, white.
Ecology
Ecological Framework for Agoseris heterophylla
The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)
The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)
| Site Information |
Value / Class |
||
|
Avg |
Min |
Max |
|
| Elevation
(metres) |
1058 | 152 | 2286 |
| Slope
Gradient (%) |
26 | 0 | 77 |
|
Aspect (degrees) |
177 | 60 | 240 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
1 | 0 | 3 |
| Modal
Nutrient Regime
Class |
B | ||
| #
of field plots species was recorded in: |
22 | ||
| Modal
BEC Zone Class |
PP | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
AT(2), ICH(2), IDF(1), PP(3) | ||
|
Source:
Klinkenberg 2013
|
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